package com.heima.user.service.impl;


import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.common.cache.CacheService;
import com.heima.common.constants.BehaviorConstants;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.user.dtos.UserRelationDto;
import com.heima.model.user.pojos.ApUserFollow;
import com.heima.user.mapper.ApUserFanMapper;
import com.heima.user.mapper.ApUserFollowMapper;
import com.heima.user.mapper.ApUserMapper;
import com.heima.user.service.IApUserFollowService;
import com.heima.utils.common.AppThreadLocalUtil;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;

/**
 * <p>
 * APP用户关注信息表 服务实现类
 * </p>
 *
 * @author Hulunico
 * @since 2024-08-21
 */
@Service
@RequiredArgsConstructor
public class ApUserFollowServiceImpl extends ServiceImpl<ApUserFollowMapper, ApUserFollow> implements IApUserFollowService {

    private final ApUserFollowMapper apUserFollowMapper;
    private final ApUserMapper apUserMapper;
    private final ApUserFanMapper apUserFanMapper;
    private final CacheService cacheService;
    /**
     * 用户关注h和取消关注
     * @param dto
     * @return
     */
    @Override
    public ResponseResult follow(UserRelationDto dto) {
        //校验参数
        if (ObjectUtils.isEmpty(dto)||dto.getOperation()<0||dto.getOperation()>1){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //必须是登录状态下才能关注
            //获取userId 看是否为空
        Integer userId = AppThreadLocalUtil.getUser().getId();

        //若userId为空就不能关注
        if (StringUtils.isEmpty(userId)){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        //user_fan 粉丝管理表 user_follow 关注表
        //将数据存入redis里 设置key value 时间戳 TODO 如果用户（我）的id和文章的id是同一个人 那么就不能关注
        if (dto.getOperation()==0){
            //关注
            //把作者的信息放进用户(我)的关注表
            cacheService.hPut(BehaviorConstants.APUSER_FOLLOW_RELATION+userId,dto.getAuthorId()+"",dto.toString());

            //把用户(我)放进作者的粉丝表
            cacheService.hPut(BehaviorConstants.APUSER_FANS_RELATION+dto.getAuthorId(),userId+"",dto.toString());
        }
        else {
            //取消关注
            cacheService.hDelete(BehaviorConstants.APUSER_FOLLOW_RELATION+userId,dto.getAuthorId()+"");
            cacheService.hDelete(BehaviorConstants.APUSER_FANS_RELATION+dto.getAuthorId(),userId+"");
        }

        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);



     /*   //user_fan 粉丝管理表 user_follow 关注表
        //我们获取到作者id 就要把它存进 关注表里 同时这个作者的粉丝表也要添加数据（传userId）
        Integer authorId = dto.getAuthorId();

        //该用户的关注表
        ApUserFollow apUserFollow = new ApUserFollow();
        ApUser apUser = apUserMapper.selectById(userId);
        //关注
        if (dto.getOperation()==0){
            //把作者的信息放进用户的关注表
            apUserFollow.setUserId(userId);
            apUserFollow.setFollowName(apUser.getName());
            apUserFollow.setFollowId(authorId);
            apUserFollowMapper.insert(apUserFollow);

            //把用户放进作者的粉丝表
            ApUserFan apUserFan = new ApUserFan();
            apUserFan.setUserId(authorId);
            apUserFan.setFansId(userId);
            apUserFan.setFansName(apUser.getName());
            apUserFanMapper.insert(apUserFan);
        }else {
            apUserFanMapper.deleteById(authorId);
            apUserFollowMapper.deleteById(userId);
        }


        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);*/
    }
}
